| |
 |
Riebeckite Mineral Data
|
|
|
General Riebeckite Information
|
 Chemical Formula: |
[ ]Na2(Fe++3Fe+++2)Si8O22(OH)2 |
| Composition: |
Molecular Weight = 935.90 gm |
| |
Sodium 4.91 % Na 6.62 % Na2O |
| |
Iron 29.84 % Fe 23.03 % FeO / 17.06 % Fe2O3 |
| |
Silicon 24.01 % Si 51.36 % SiO2 |
| |
Hydrogen 0.22 % H 1.92 % H2O |
| |
Oxygen 41.03 % O |
| |
______ ______ |
| |
100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Na2Fe2+3Fe3+2(Si8O22)(OH)2 |
| Environment: |
Magmatic and metamorphic rocks. |
| IMA Status: |
Valid Species (Pre-IMA) 1888 |
| Locality: |
Socotra island, Indian Ocean, Yemen. Link to MinDat.org Location Data. |
| Name Origin: |
Named after the German traveler, Emil Riebeck (1853-1885). |
| Name Pronunciation: |
Riebeckite + Pronunciation  |
| Synonym: |
Crocidolite - asbestos form |
| |
ICSD 38218 |
| |
PDF 19-1061 |
| |